Question

find the area of the square park whose perimeter is 320 m.

Answer 1

Area = (320/4)^2
Therefore, area = 6400 m^2
(^_^)

Answer 2

let thhe length of each side be a m
then A/Q
         4 × a = perimeter
⇒        4a   = 320 m
⇒           a  =   80 m
∴a=80m
so area of the park is = (a)²
                                  =(80)²
                                  =6400 m²